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    SubjectRe: [ANNOUNCE] 3.0.1-rt8 - Regression to 3.0-rt7
    Date
    Hi Peter
    > Does the below (on top of -rt8) cure things for you? Shouldn't make a
    > difference for PREEMPT_LL though, so maybe there's something else busted
    > as well. But from what I can tell PREEMPT_BASE should be fine with such
    > things disabling preemption..
    >
    > ---
    > Index: linux-2.6/include/linux/uaccess.h
    > ===================================================================
    > --- linux-2.6.orig/include/linux/uaccess.h
    > +++ linux-2.6/include/linux/uaccess.h
    > @@ -22,7 +22,7 @@ static inline void raw_pagefault_enable(
    > preempt_check_resched();
    > }
    >
    > -#ifndef CONFIG_PREEMPT_RT_FULL
    > +#ifndef CONFIG_PREEMPT_RT_BASE
    > static inline void pagefault_disable(void)
    > {
    > raw_pagefault_disable();
    > Index: linux-2.6/mm/memory.c
    > ===================================================================
    > --- linux-2.6.orig/mm/memory.c
    > +++ linux-2.6/mm/memory.c
    > @@ -3438,7 +3438,7 @@ int handle_pte_fault(struct mm_struct *m
    > return 0;
    > }
    >
    > -#ifdef CONFIG_PREEMPT_RT_FULL
    > +#ifdef CONFIG_PREEMPT_RT_BASE
    > void pagefault_disable(void)
    > {
    > migrate_disable();
    The patch fixes the problem for CONFIG_PREEMPT_RTB but not for
    CONFIG_PREEMPT_LL. With the latter the error is still there.

    Thanks
    Tim

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